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    • 2. 发明授权
    • Degradation simulator for gas sensor
    • 气体传感器降解模拟器
    • US07980121B2
    • 2011-07-19
    • US12203398
    • 2008-09-03
    • Mikiyasu MatsuokaTomoo KawaseEiichi Kurokawa
    • Mikiyasu MatsuokaTomoo KawaseEiichi Kurokawa
    • G01M15/10
    • G01N33/0037F02D41/1454F02D41/1474F02D41/1495F02D41/222F02D41/2474Y02A50/245
    • The degradation simulator is used for a gas sensor including a sensor element having a solid electrolyte layer and a pair of electrodes located opposite to each other across from the solid electrolyte layer, the sensor element outputting a sensor output signal having a value depending on concentration of a specific gas in the ambient gas. The degradation simulator includes a first setting function of enabling variably setting a time constant delay which appears on the sensor output signal when concentration of the specific gas changes, a second setting function of enabling variably setting a dead time delay which appears on the sensor output signal when concentration of the specific gas changes, and an adding function of adding at least one of the time constant delay and dead time delay to the sensor output signal in order to generate a pseudo-degraded sensor output signal in accordance with an external instruction.
    • 降解模拟器用于气体传感器,其包括具有固体电解质层的传感器元件和在固体电解质层之间彼此相对定位的一对电极,传感器元件输出具有取决于浓度的值的传感器输出信号 环境气体中的特定气体。 降级模拟器包括第一设置功能,其能够可变地设置当特定气体的浓度改变时出现在传感器输出信号上的时间常数延迟,允许可变地设置出现在传感器输出信号上的死区延迟的第二设置功能 当特定气体的浓度变化时,以及将至少一个时间常数延迟和死区时间延迟添加到传感器输出信号中的加法功能,以便根据外部指令产生伪劣化的传感器输出信号。
    • 3. 发明授权
    • Gas concentration measuring apparatus with failure monitor
    • 具有故障监测器的气体浓度测量仪
    • US07582197B2
    • 2009-09-01
    • US11091916
    • 2005-03-29
    • Tomoo KawaseEiichi Kurokawa
    • Tomoo KawaseEiichi Kurokawa
    • G01N27/26
    • F02D41/1495F02D41/1455G01N27/4175G01N33/007
    • A gas concentration measuring apparatus for use in air-fuel ratio control of motor vehicle engines is provided which is designed to detect and identify a cause of failure in operation of an A/F sensor. The apparatus works to apply the voltage to a sensor element and sweep it to produce a change in electrical current flowing through the sensor element for measuring the impedance of the sensor element. The apparatus samples values of the change in the current, a sensor output indicating an air-fuel ratio of mixture supplied to the engine, etc., before and/or after the sensor element is activated and uses a combination thereof to identify the cause of the failure of the A/F sensor.
    • 提供一种用于机动车辆发动机的空燃比控制的气体浓度测量装置,其被设计用于检测和识别A / F传感器的操作失败的原因。 该装置用于将电压施加到传感器元件并将其扫过以产生流过传感器元件的电流变化,以测量传感器元件的阻抗。 该装置在传感器元件被激活之前和/或之后采样电流变化的值,传感器输出,指示供应给发动机的混合物的空气 - 燃料比等,并且使用其组合来识别 A / F传感器的故障。
    • 4. 发明申请
    • OXYGEN SENSOR OUTPUT CORRECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 用于内燃机的氧气传感器输出校正装置
    • US20080262704A1
    • 2008-10-23
    • US12104027
    • 2008-04-16
    • Tomoo KawaseEiichi KurokawaTakahito Masuko
    • Tomoo KawaseEiichi KurokawaTakahito Masuko
    • F01N9/00
    • F01N9/00F02D41/123F02D41/1448F02D41/1455F02D41/18F02D41/2454F02D41/2474Y02T10/47
    • A correction apparatus for correcting an error in an output of an oxygen sensor such as an A/F sensor installed in an exhaust pipe of an internal combustion engine to measure the concentration of oxygen contained in exhaust gas. The apparatus works to determine a given parameter correlating with an actual concentration of oxygen within the exhaust pipe after start of a fuel cut event and also determine an oxygen concentration-corresponding output based on the given parameter which is a parameter corresponding to an output of the oxygen sensor considered to represent the actual concentration of oxygen correctly. The apparatus samples an output of the oxygen sensor during the fuel cut event and determines a correction factor based on the sampled output of the oxygen sensor and the oxygen concentration-corresponding output for use in correcting an output of the oxygen sensor when the engine is undergoing no fuel cut.
    • 一种用于校正安装在内燃机的排气管中的A / F传感器等氧传感器的输出的误差的校正装置,以测量废气中所含的氧浓度。 该装置用于确定在开始燃料切断事件之后与排气管内的氧气的实际浓度相关联的给定参数,并且还基于给定参数确定氧浓度对应的输出,所述给定参数是对应于 氧气传感器被认为是正确表示氧气的实际浓度。 该装置在燃料切断事件期间对氧传感器的输出进行采样,并根据氧传感器的采样输出和氧浓度相应的输出确定校正因子,用于在发动机正在进行时校正氧传感器的输出 没有燃料切断
    • 10. 发明授权
    • Gas concentration measuring apparatus compensating for error component of output signal
    • 补偿输出信号误差分量的气体浓度测量装置
    • US06295862B1
    • 2001-10-02
    • US09432067
    • 1999-11-02
    • Eiichi KurokawaTomoo KawaseSatoshi HuduToshiyuki SuzukiSatoshi Nakamura
    • Eiichi KurokawaTomoo KawaseSatoshi HuduToshiyuki SuzukiSatoshi Nakamura
    • G01N27416
    • G01N27/419
    • A gas concentration measuring apparatus is provided which measures the concentration of two kinds of gas components such as O2 and NOx contained in exhaust gasses of an internal combustion engine of automotive vehicles. The apparatus has a gas sensor which includes a first cell responsive to application of a voltage to discharge O2 in the exhaust gasses to the outside and produce an electric current as a function of concentration of the discharged O2 and a second cell responsive to application of a voltage to produce an electric current as a function of concentration of NOx in the exhaust gasses from which the O2 is discharged by the first cell. The apparatus offsets an error component of the electric current produced by the second cell which depends upon O2 contained in the exhaust gasses, or which in related operations, depends upon any residual oxygen remaining in the second cell without being discharged by the first cell.
    • 提供一种气体浓度测量装置,其测量机动车辆的内燃机的废气中所含的两种气体成分如O 2和NO x的浓度。 该装置具有气体传感器,该气体传感器包括响应于施加电压以将废气中的O 2排放到外部并产生作为排放的O 2的浓度的函数的电流的第一单元和响应于应用 电压以产生作为第一电池从其排出O2的废气中的NOx的浓度的函数的电流。 该装置抵消由第二电池产生的电流的误差分量,其取决于废气中所含的O 2,或者在相关操作中取决于残留在第二电池中的任何残余氧而不被第一电池放电。